diff --git a/OpenRA.Game/Actor.cs b/OpenRA.Game/Actor.cs
index 94b3da5818..2b208dd522 100644
--- a/OpenRA.Game/Actor.cs
+++ b/OpenRA.Game/Actor.cs
@@ -265,7 +265,8 @@ namespace OpenRA
 		Lazy<ScriptActorInterface> luaInterface;
 		public void OnScriptBind(ScriptContext context)
 		{
-			luaInterface = Exts.Lazy(() => new ScriptActorInterface(context, this));
+			if (luaInterface == null)
+				luaInterface = Exts.Lazy(() => new ScriptActorInterface(context, this));
 		}
 
 		public LuaValue this[LuaRuntime runtime, LuaValue keyValue]